For discussions of Amateur Radio Examinations (inc. practice or mocks exams), Training, Syllabus & other related stuff. If you are starting to get into the hobby, feel free to ask Any Question, & responses should be genuine answers.

When you pick up a handheld transceiver and communicate on VHF or UHF across town or through a repeater you are generally transmitting line of sight. Not so however with HF transmission. When you are using 160m to 10m the signal reaches the earth's ionosphere and bounces back to earth to be received at a greater distance than line of sight.